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THE “POLY-RIB” CONSERVANCY TANK

The conservancy tank is identical in appearance to our “Poly-Rib” 1.200 litre septic tank, but minus all pipes and fittings. A conservancy tank, by definition, has an inlet but no outlet, and is emptied by means of “honeysucking” through the manhole lid. In the event of a configuration comprising two or more conservancy tanks, the contents of all the tanks may be emptied by accessing the assembly through any one of the manhole lids. Any size may be configured by adding tanks to an assembly. Such assemblies can be either in series or in parallel depending on the availability of space. Conservancy tanks tend to be the most expensive option, in the long run, when deciding on an on-site sewage solution, the reason for this being the on-going expense of “honeysucking” on a regular basis.

The product specifications are as follows:

Height:   1,4 metres (base to manhole lid)
Diameter (cylindrical):   1,2 metres
Length:   1,5 metres
Construction:   Cylindrical ribbed with domed ends and a centre internal stabiliser bar to reinforce the domed ends against possible abnormal pressures
Weight:   40 Kg – easily transportable
Chambers:   Single
Total Capacity:
1.200 litres
Fluid Working Capacity:   1.100 litres
Wall Thickness:   5mm
Inlet and Outlet Diameter:   110mm
Manhole Diameter:   450mm
Manhole Lid Design:   Provision for filling with concrete ballast
Manhole Access Extension:   500mm
No Metallic Components
Indefinite Life


It should be remembered that the effluent contained in these tanks is still highly toxic, and should not be allowed to flow into the environment. The depth of the effluent within the tanks should be inspected regularly to ensure that “honeysucking” (emptying) can take place prior to the assembly overflowing because the capacity has been exceeded.

We reiterate that the effluent contains high levels of toxicity and this should never be permitted to lie in puddles or dams.

When there are children around, ensure that concrete ballast is cast in the lids of the manholes to prevent the children from opening the manholes. If a person falls into one of the units, drowning could result.

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All Enquiries may be directed to our Enquiry Form or:

Tel: +27 (0) 12-347-9151 | +27 (0) 12-347-9013 Fax: +27 (0) 12-347-9174 Cell: +27 (0) 82-417-8069
E-mail: ballam@mweb.co.za Postal Address: P.O. Box 65399, Erasmusrand, Pretoria, 0165

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